@media(max-width: 1199px){
  header{
    background: none;
  }
}

@media(max-width: 991px){
  #logo img {
    height: 30px;
  }
}

@media(max-width: 767px){
  #logo img {
    height: 26px;
  }
  .banner{
    padding-top: 50px;
    padding-bottom: 50px;
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  #ready_to_start{
    padding: 50px;
  }
}

@media(max-width: 576px){
  #logo img {
    height: 22px;
  }
  .site_nav .btn_dark{
    font-size: 12px;
    padding: 7px 15px;
  }
}